*2021/04/07 15:02:15.33 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2020/06/26 02:38:48.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 3 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 935BECCB NUMBER OF CHANNELS : 24 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 180 9179 2 Bottle_Number n/a 1 3 3 Bottle:Firing_Sequence n/a 1 3 4 Pressure:CTD dbar 5.2 2000.6 5 Temperature:CTD deg_C_(ITS90) 1.9515 13.5775 6 Salinity:CTD PSS-78 32.1095 34.5875 7 Sigma-t:CTD kg/m^3 24.0664 27.6707 8 Transmissivity:CTD:650 %/m 50.2 60.3 9 Transmissivity:CTD:530 %/m 75.7 95.4 10 Oxygen:Dissolved:CTD:Volume ml/l 0.66 6.36 11 Oxygen:Dissolved:CTD:Mass µmol/kg 28.5 277.1 12 Fluorescence:CTD:Seapoint mg/m^3 0.79E-01 1.161 13 PAR:CTD µE/m^2/sec 0 17.1 14 Salinity:Bottle PSS-78 32.1129 34.5881 15 Flag:Salinity:Bottle n/a 16 Nitrate_plus_Nitrite:Bottle µmol/l 0.2 0.2 17 Flag:Nitrate_plus_Nitrite:Bottle n/a 18 Phosphate:Bottle µmol/l 0.433 0.433 19 Flag:Phosphate:Bottle n/a 20 Silicate:Bottle µmol/l 2.84 2.84 21 Flag:Silicate:Bottle n/a 22 Chlorophyll:Extracted:Bottle mg/m^3 -99 -99 23 Flag:Chlorophyll:Extracted:Bottle n/a 24 Phaeo-Pigment:Extracted:Bottle mg/m^3 -99 -99 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I 0 2 -99 ' ' 3 I I 0 3 -99 ' ' 3 I I 0 4 -99 ' ' 7 F ' ' 1 5 -99 ' ' 9 F ' ' 4 6 -99 ' ' 9 F ' ' 4 7 -99 ' ' 9 F R4 4 8 -99 ' ' 6 F ' ' 1 9 -99 ' ' 6 F ' ' 1 10 -99 ' ' 7 F ' ' 2 11 -99 ' ' 6 F ' ' 1 12 -99 ' ' 8 F ' ' 3 13 -99 ' ' 7 F ' ' 1 14 -99 ' ' 9 F R4 4 15 0 ' ' 3 NQ C ' ' 16 -99 ' ' 6 F R4 1 17 0 ' ' 3 NQ C ' ' 18 -99 ' ' 8 F R4 3 19 0 ' ' 3 NQ C ' ' 20 -99 ' ' 7 F R4 2 21 0 ' ' 3 NQ C ' ' 22 -99 ' ' 7 F R4 2 23 0 ' ' 3 NQ C ' ' 24 -99 ' ' 7 F R4 2 $END *ADMINISTRATION MISSION : 2020-005 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : La Perouse Zooplankton Monitoring SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : WCVI STATION : P10 EVENT NUMBER : 64 LATITUDE : 48 53.63000 N ! (deg min) LONGITUDE : 129 39.88000 W ! (deg min) WATER DEPTH : 2674 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS Sample Number 180: CHL:Bottle - samples lost in analysis values not usable. Analysis methods: ----------------- Salinity samples were collected in 200 ml type ll glass bottles with disposable nylon inserts and screw caps supplied by Ocean Scientific International Limited. They were analyzed in a temperature-controlled lab on a Guildline 8400B Salinometer standardized with IAPSO standard seawater 10 - 30 days after collection. For details on duplicate analysis see file 2020-005_SAL.pdf. Oxygen samples were analyzed at sea using an automated Winkler titration system (Metrohm Dosimat model 876 and a UV light source and detector with a 365nm filter controlled by LV02_876 software designed and constructed by Scripps Institution of Oceanography) with modifications based on Carpenter (1965) and adhering to WOCE protocols (Culberson 1991). For details on duplicate analysis see file 2020-005_OXY.pdf. Nutrient samples were collected in plastic tubes. One set of samples was collected and immediately quick frozen in aluminum blocks stored in -20 freezer. Another set of samples from 400 dbar and deeper (to be used for silicate analysis) was collected and stored at 4C in the dark. All samples were returned to IOS for analysis using an Astoria analyzer following methods described in IOS Nutrient Methods (1996) Barwell-Clarke and Whitney. For precision and duplicate analysis see file 2020-005_NUT.pdf. Chlorophyll samples were filtered onto 25mm GF/F filters and stored in glass scintillation vials at -80C prior to analysis. Samples were extracted in 90% acetone at -20C for 24 hours and analyzed on a Turner 10AU fluorometer calibrated with commercially pure chlorophyll a standard (Sigma). Fluorescence readings taken before and after acidification were used to calculate chlorophyll and phaeopigment concentrations (Holm-Hansen et al 1965). Chlorophyll samples were analyzed at IOS ~4 weeks after the cruise, during the COVID-19 pandemic restriction. When duplicate samples were collected the average of two samples is reported. Variability is assessed as the CV% (std dev / mean*100). Flags and comments apply to chlorophyll values only. No flags or comments are assigned for Phaeopigment values. Precision Statement: Excluding degraded samples, chlorophyll values ranged from 0.02-33.18 µg/l in 386 samples. Average %CV for this cruise was 3% with 0 out of 44 duplicate pairs having a CV > 10% and 0 duplicate pairs having a CV > 30%. Our average dataset %CV is 3.80% for 2013 - 2018 so the overall quality of this dataset is excellent. For details on duplicates see file 2020-005_CHL.pdf. References: 1. Holm-Hansen, O., Lorenzen, C.J., Holmes, R.W., and Strickland J.D.H. 1965. Fluorometric Determination of Chlorophyll. J.du Cons. Intl. Pour l’Epl. De la Mer. 30:3-15. 2. Carpenter, J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr., 10: 141-143. 3. Culberson, C.H. 1991. Dissolved oxygen. WOCE Hydrographic Programme Operations and Methods (July 1991). 15pp. 4. Barwell-Clarke, J. and Whitney, F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. Data Processing Notes: ---------------------- Transmissivity, Fluorescence and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. There were 2 WetLabs CStar transmissometers in use during this cruise: Transmissometer:CTD:530 refers to sensor #1883DG (530nm - green) Transmissometer:CTD:650 refers to sensor #1185DR (650nm - red) For comparison with other Institute of Ocean Sciences cruises, note that the transmissometer wavelength is 650 nm unless otherwise stated. NOTE: While the Fluorescence:CTD data are expressed in concentration units, they do not always compare well to extracted chlorophyll samples, particularly for casts far from shore. It is recommended that users check extracted chlorophyll values where available. For details on the processing see the report: 2020-001-proc.pdf. $REMARKS Quality flags have the following significance: ---------------------------------------------------------------------------------- 0 = Acceptable measurement with no header comment. 1 = Sample for this measurement was collected but not analyzed. Sample lost. 2 = Acceptable measurement with header comment. 3 = Questionable measurement (probably good). 4 = Poor measurement (probably bad). 5 = Measurement not reported (bad). 6 = Mean of replicate measurements. 7 = Manual chromatographic peak measurement. 8 = Irregular digital chromatographic peak integration. 9 = Sample was planned for this measurement from this bottle but was not collected. ----------------------------------------------------------------------------------- $END !-1-- 2- 3- --4--- ---5---- ---6---- ---7---- --8-- --9-- --10-- --11- ---12-- --13-- ---14--- 15 --16- 17 ---18-- 19 --20-- 21 --22-- 23 --24-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: Salinity Fl Nitra Fl Phospha Fl Silica Fl Chloro Fl Phaeo- !le_ tt tt re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: CTD :Bottle ag te_pl ag te: ag te: ag phyll: ag Pigmen !Numb ~u ~u vity: vity: lved: solve CTD: ~o ~Nitr ~o Bottle ~o Bottle ~o Extrac ~o t:Extr !er mb en CTD: CTD: CTD: d:CTD Seapoin tt ite:B tt tt tt ted: tt acted: ! er ce 650 530 Volume :Mass t le ottle le le le Bottle le Bottle !---- -- -- ------ -------- -------- -------- ----- ----- ------ ----- ------- ------ -------- -- ----- -- ------- -- ------ -- ------ -- ------ *END OF HEADER 180 3 3 5.2 13.5775 32.1095 24.0664 50.2 75.7 6.36 277.1 1.161 17.1 34.5881 0 0.2 0 0.433 0 2.84 0 -99.00 5 -99.00 9179 2 2 1500.1 2.3925 34.5119 27.5744 60.3 95.2 0.66 28.5 0.079 0.0 32.1129 0 -99.0 0 -99.000 0 -99.00 0 -99.00 0 -99.00 9178 1 1 2000.6 1.9515 34.5875 27.6707 60.3 95.4 1.33 58.0 0.080 0.0 34.5130 0 -99.0 0 -99.000 0 -99.00 0 -99.00 0 -99.00